Computer continually rebooting?

[Resung]

A few days ago my antivirus popped up with an infection warning as i was doing several different things at once and my PC froze up completely. I assumed i had been pushing it too hard - it's about 5 years old now - and manually turned it off with the intention of doing a scan, etc, next time i went back on it.

In between then and now my girlfriend used the computer, got an infection warning when she turned it on, and straight away turned it off (i don't know whether she did this manually or through the start button, she's not very good with computers). Since then whenever i try and start my computer it gets to the windows screen then just stops and starts rebooting again, and continues this until i turn it off.

I've tried using some of the F keys during boot up but nothing happens. I can get onto setup using the Del key but am not confident in playing around there, and didn't immediately see anything i could tweak to help things.

Any advice?

[Ritho]

Can you boot into Safe Mode? i.e. keep tapping "F8" as your computer is booting. (before windows begins to start)

If you can do that perhaps you can run a scan in safe mode, and use system restore to roll your system back if you have that enabled.

[Anupam]

Resung, you had posted about malware infection problem few days back on this thread too :

Help with Virus(es)?

Is this the same PC which had infection as reported in the above thread? Were you able to successfully remove the infection on that PC?

From your post, its obvious that you have an infection on your PC. As posted by Ritho, you should try to boot into Safe Mode by hitting F5 or F8 key repeatedly at boot time. Then proceed as directed by Ritho. Also, follow the steps outlined in the mentioned thread.

[Resung]

Hi Anupam,

Yes that was me in the last thread. But i installed hitman pro and got an online scan from another anti-virus (i forget which one right now!) that cleared my PC and had it running trouble free again.

As for the F keys, if memory serves i tried all of them and nothing worked. I'll try again when i get back home and see if i get a different result this time.

[Resung]

Well i tried the F keys and no joy again. F8 takes me to a screen where i can change the boot order, but since i only boot from hard drive it doesn't help. F5 gave me the option to boot to safe mode or last working setting, neither of which worked and it just went back into it's continual reboot sequence.

Ideas?

[Anupam]

The F5 key had worked. It showed you a boot screen from where you could choose the Safe Mode. But, I think the virus infection is preventing from booting into safe mode. I recently came across this problem, while dealing with an infected PC. Trouble is, that your PC is not booting into normal mode too.

So, in my opinion, the best way for you is to download a bootable antivirus rescue CD, and then boot your PC with it, and also scan the PC.

You can download Avira Rescue CD here :

http://www.avira.com/en/support-down...-rescue-system

Or, you can also try other rescue CDs like Kaspersky, or Dr. Web. I don't have the links to them though. If anyone has them, please share.

Another way can be to put your hard drive as slave on a working system, with good protection, and then scan it there. But, it involves risk of spreading the infection on the good system too.

Rescue CD seems to be the best option at this time.

[torres-no-tan-magnifico]

Kaspersky:http://support.kaspersky.com/faq/?qid=208282173

Dr Web:http://www.freedrweb.com/livecd/?lng=en

Hope the above helps.

[Anupam]

Thanks a lot Torres .