Can't boot in to xp in dual boot 98se/xp system?

i have a dual boot 98se/xp system. On 98 i have "avast v4.6" installed (antivirus). Two days ago i installed "antivir" in xp. Then scanned the pc got many viruses caught. Acted as per the recomendations. Then booted in 98 and got the pc scanned. To my surprise again many viruses were found. Action taken as recommended.

Next day when I tried to boot in Xp the message of booting in appeared after pressing "ctrl-altr-del" and after entering password. But immediately logged off automatically and asked to press "ctrl-alt-del". Tried many times but same problem.

Tried to use all boot options pressing F8 but same situation every time.

Can anybody suggest the solution other than reinstalling xp.

Note: 1] I can boot in 98

2] I am the only user of pc and has only one user profile.

Can't boot in to xp in dual boot 98se/xp system?anti virus software

Disable antivirus,

Disable internet connections,

Boot 98 se first

Then boot XP.

Activate Antivirus.

If Failed

preform a clean boot.

98 SE first then

XP, Before doing this read the help files.

Can't boot in to xp in dual boot 98se/xp system?aurora

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