CFD is a decentralizing process

4. Where can I download the firmware of retrogame1.0s motherboard? Just download it from the Pacific Software Center.

5. CIH virus is a kind of malignant virus which can destroy the hardware of computer system. The virus was proced in Taiwan by Chen Yinghao, chief engineer of mobile phone R & D center of Jijia communication company (a subsidiary of Jijia), while he was studying in Taiwan's Datong Institute of technology[ 1] The first pirated discs sold by the two major international piracy groups were widely spread in Europe and the United States, and then further spread to all corners of the world through the Internet< In September 1998, Yamaha company provided a firmware update for cd-r400 drivers infected with the virus. In October 1998, a demo version of sin, a game of Activision company, spread by users, was infected by contacting infected files on a user's machine. The company's source of infection came from a group of Aptiva brand personal computers sold by IBM in March 1999, which were infected with CIH virus. On April 26, 1999, when the public began to pay attention to the first attack of CIH, these computers had been running for a month. This is a great disaster. Countless computer hard disks around the world are covered by junk data, and even the BIOS is damaged, unable to start. As of April 26, 2000, several cases of damage were reported in Asia, but the virus did not spread. Anjulie worm was found in March 2001. It implanted CIH v1.2 into the infected system< The resurgence of this virus occurred in 2001. A variant of the love bug virus in a VBScript document disguised as a nude photo of Jennifer Lopez contains a hook routine of the CIH virus, which makes the virus spread on the Internet
a modified version of cih.1106 was found in December 2002, but it was not seriously destructive
CIH can only be regarded as a threat if it infects the programs used by a large number of computer worms (such as cover letter virus) that send letters, or if Anjulie worm is involved. But CIH virus only attacks on Windows 95, 98 and windows me system, and its influence is limited. Now, because people have recognized its threat, and it can only run on the old Windows 9x operating system, CIH is no longer as widely spread as it was when it first appeared<

virus damage:

of course, the damage of CIH to BIOS is not as terrible as expected. Now PC basically uses two kinds of ROM to store BIOS data, one is the traditional ROM or EPROM, the other is E2PROM. The manufacturer "burned" BIOS into these memories by special means in advance, and then installed them in the PC. When we turn on the computer power, the program and data in the bios are executed and loaded first, so that our system can correctly identify all kinds of hardware installed in the machine and call the corresponding driver, and then the hard disk starts to boot the operating system. The data solidified in ROM or EPROM can be cleared only when special voltage is applied or ultraviolet light is used. This is why when we open some computer cases, we may see a small piece of silver or black paper pasted on a chip to prevent the ultraviolet wire from clearing BIOS data. To clear the data stored in this kind of ROM, it is not enough to calculate the internal voltage of the system. Therefore, users who only use this read-only memory to store BIOS data need not worry that CIH virus will destroy BIOS. But the latest computers, especially those above Pentium, basically use E2PROM to store part of BIOS. E2PROM is also called "electrically rewritable read only memory". In general, the data in this kind of memory will not be rewritten easily by users, but as long as special logic and voltage are applied, it is possible to rewrite the data in E2PROM. Using the CPU logic of PC and the internal voltage of computer, we can easily rewrite E2PROM. This is the principle of upgrading BIOS through software and the basic method of destroying BIOS by CIH. Rewriting the data in E2PROM requires certain logic conditions. Different PC systems may have different requirements for this condition. Therefore, CIH will not destroy all motherboards that use E2PROM to store BIOS. At present, only several 5V motherboards such as Gigabyte and MSI are reported. This does not mean that the quality of these motherboards is poor, but the E2PROM logic is just consistent with CIH, Or the compilers of CIH may purposely destroy the motherboards of some brands. Therefore, to determine whether CIH is harmful to your motherboard, we should first determine whether your BIOS is only burned in ROM / EPROM, or some use E2PROM. It should be noted that although CIH will not destroy all BIOS, the destruction of all data on the hard disk by CIH on the "black" 26th is far more serious than the destruction of BIOS, which is inevitable for every user infected with CIH virus<
virus version:
CIH virus is a file type virus with strong lethality. Its aliases are win95.cih, spacefiller, win32.cih and PE_ CIH, its main
CIH virus
to infect Windows 95 / 98 under the executable file (PE format, portable executable format), the current version does not infect dos and win 3. X (NE format, windows and OS / 2 windows 3.1 execution file format) under the executable file, and invalid in win NT. Its development process has gone through five versions: v1.0, v1.1, v1.2, v1.3 and v1.4. At present, the most popular version is v1.2. During this period, according to some reports, no less than ten variants have been proced at the same time. However, there seems to be no sign of popularity. I have not actually come into contact with these so-called CIH variants< Different versions of CIH virus have been improved over time. The basic development process is as follows:
v1.0 version
the original version of v1.0 only has 656 bytes, its rudiment is relatively simple, and there is not much improvement in structure compared with ordinary types of virus. Its biggest "selling point" is that it is one of the few viruses at that time It is one of the viruses that can infect the executable files of Microsoft Windows PE class. The length of the program files infected by it increases. This version of CIH is not destructive<

CIH virus v1.1 version
when it develops to v1.1 version, the length of the virus is 796 bytes. This version of CIH virus has the function of judging WinNT software. Once it is judged that the user is running WinNT, it does not work and hides itself to avoid error messages. At the same time, it uses more optimized code to rece its length. Another outstanding point of this version of CIH is that it can use the "gap" in the winpe class executable file to split itself into several parts according to the needs and insert them into the PE class executable file respectively. The advantage of this is that when most winpe class files are infected, the file length will not increase<

v1.2 version
when it develops to v1.2 version, in addition to correcting some defects of v1.1 version, the code that destroys the user's hard disk and BIOS program of the user's host is added. This improvement makes it into the ranks of malignant viruses. The length of CIH virus body of this version is 1003 bytes<

the biggest defect of CIH virus in v1.3
v1.2 is that when it infects the zip self extractors file, it will cause the zip self extractor header corrupt.
possible cause: disk or file transfer error.
. The CIH virus of v1.3 version appears to be in a hurry, and its improvement point is aimed at the above defects. Its improvement method is: once it is judged that the opened file is a self extracting program of winzip class, it will not be infected. At the same time, this version of CIH virus modified the attack time. The length of CIH virus in v1.3 is 1010 bytes<

v1.4 version
This version of CIH virus improves the defects in previous versions, does not infect the zip self extracting package file, and modifies the attack date and the right information in the virus (version information is changed to "CIH v1.4 Tatung", and the relevant information in previous versions is "CIH v1. X ttit"). The length of this version is 1019 bytes. From the above description, we can see that in fact, among the relevant versions of CIH, only v1.2, v1.3 and v1.4 are actually destructive. The attack date of v1.2 CIH virus is April 26 every year, which is the most popular virus version in 2002. The attack date of v1.3 CIH virus is June 26 every year, However, the attack date of CIH v1.4 is changed to the 26th day of each month, which greatly shortens the attack ration and increases its destructiveness<

special attack:

CIH is a malignant virus. When the attack conditions are mature, it will destroy the hard disk data, and may destroy the BIOS program at the same time. The attack characteristics of
CIH virus
are as follows:
1. Starting from the main boot area of the hard disk, write garbage data to the hard disk in turn until the hard disk data is completely destroyed. In the worst case, all the data of the hard disk (including all the data of the logical disk) are destroyed. If the important information is not backed up, it will only cry
2. BIOS information in flash ROM on some motherboards will be cleared
3. V1.4 version attacks on the 26th of every month, v1.3 version attacks on the 26th of June every year, and the following versions attack on the 26th of April<

memorabilia:
(1998-2004)
June 2, 1998: the first CIH virus report from Taiwan
June 6, 1998: CIH v1.2 version
June 12, 1998: CIH v1.3 version
June 26, 1998: CIH v1.3 version caused a certain degree of damage
June 30, 1998: CIH v1.4 version
July 1998: CIH v1.3 version was found in the Internet environment This is a case of distributed infection based on Win98 system
July 26, 1998: CIH virus began to spread in large areas in the United States
August 1998: demo was found to be infected on Wing Commander game site
August 1998: two European PC game magazine CDs were found to be infected with CIH
August 26, 1998: CIH version 1.4 broke out, First global spread
August 31, 1998: Ministry of Public Security issued an emergency notice, Xinhua news agency CCTV news broadcast full text
September 1998: Yamaha's software for a certain type of CD-R driver was infected with CIH
October 1998: a demo version of sin released around the world was found to be infected with CIH
March 1999: CIH version 1.2 was found to be pre installed in IBM's Aptiva machine
April 26, 1999: CIH version 1.2 broke out for the first time in the world for more than 6000 years On April 26, 2000, the second large-scale outbreak of CIH version 1.2 resulted in a global loss of more than one billion US dollars
on April 26, 2001, the third large-scale outbreak of CIH. More than 6000 computers were damaged by CIH in Beijing alone
April 26, 2002: CIH virus broke out again, thousands of computers were damaged
April 26, 2003: there are still more than 100 victims of CIH virus

infection characteristics:
because the information of the identification version number of the popular CIH virus is in plaintext, Therefore, you can identify whether you are infected with CIH virus by searching the string in the executable file. The search feature string is "CIH V" or "CIH v1." if you want to search more complete feature string, you can try "CIH v1.2 ttit", "CIH v1.3 ttit" and "CIH v1.4 Tatung", instead of searching "CIH" feature string directly, Because this feature string also exists in many normal programs, for example, the following code line exists in the program: Inc BX Dec CX Dec ax, then their feature code is positive

6. This is a very common error! Some can be solved by reloading the system, some are caused by memory compatibility! General no matter he can also normal use!

7. If you have any problem, you can say it. It's also an opportunity for everyone to learn and communicate. Everyone will help.

1. You use proxy IP for your QQ. Tencent service center is to provide security services for your QQ. You are forbidden to log in. (or you frequently change the IP to log in. Or the proxy server of * * IP fails). This situation is no problem. Just keep logging in with fixed IP frequently

2 Check with QQ doctor.

3. Your QQ is blocked because it violates the usage rules (such as intrusion or cracking).

4. Or someone logs in with your QQ.

I think it's the first or second reason. The proxy server fails. Try again. Sometimes it's OK.

I don't know if the answer will help you. I wish you success Thanks<

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supplementary answer:
1. Enter the QQ folder and delete the file with your number
that is, delete the file with your QQ number as the file name
and then log on your number again! Try it

2. Check the system time. If it's not correct, please correct it. Then log in again.

3. Log in with a different QQ number.

if it's normal, your QQ number has the above problems.

if you can't log in, you need to check whether your QQ program or the whole machine is poisoned