XP rebooting

[Guest]

I had a problem with my PC. It was rebooting very soon after login. No error message. the same in safe mode. After formating the hard disk I installed the XP.
The problem was still there. removed as many hardware as possible (netowrk card, CD ROMs chaged to old video card) the problem still there.
Formated again and tried to install. about 2/3 way through the install- at exactly the same point- the computer reboots.
Power supply and all the fans work fine. Have resitted the memory chips.
do not know what to do now? Could it be the whole memory bank is dead??
works fine when booting from DOS diskette
Any ideas? I need help

 

[John Barnett MVP]

A long shot maybe but perhaps a virus in the master boot record. When you
reinstalled did you simply format the partition or did you delete the
partition and recreate another one? If you didn't it might be worth
reinstalling again but before you get to the format the parttion section of
the setup select Delete partition. After deleting the partition next select
Create and create a new partition.
To check for a virus before windows boots you really need a Dos floppy
version of anti virus. Something like McAfee Cleanboot. However, if the
virus definitions are not up to date it is pointless scanning for viruses
because the virus may not be registered on the floppy.

 

[Guest]

Thanks,
I changed the partion as well before formating.
Any other idea?

 

[Steve Nielsen]

A long shot maybe but perhaps a virus in the master boot record. When you
reinstalled did you simply format the partition or did you delete the
partition and recreate another one? If you didn't it might be worth
reinstalling again but before you get to the format the parttion section of
the setup select Delete partition. After deleting the partition next select
Create and create a new partition.
To check for a virus before windows boots you really need a Dos floppy
version of anti virus. Something like McAfee Cleanboot. However, if the
virus definitions are not up to date it is pointless scanning for viruses
because the virus may not be registered on the floppy.

Deleting and adding partitions does not overwrite the MBR, it only
changes the partition table information in MBR. Boot sector viruses
infect the bootstrap code in the MBR so deleteing partition will have no
effect on such an infection.

Steve