I dont know why my computer wont start can someone plz help me?

sorry first post %26gt;.%26lt;

ok.. something has been seriously messed up with my comp for a month it seems like. it all started out of nowhere i started getting the error message ''missing or corrupt file hal.dll'' i fixed that part by rebuilding the bootcfg and everything was fine for a while. but then out of no where whenever i restart my computer now it wont make it to the windows loading screen

and the only way i can get it to windows is when i go thru my xp cd and use the repair console and run chkdsk /p and /r after both of those have run it finally starts up but slower than **** ive tried scanning with various programs (i.e. avg hijackthis spybot s%26d...) all have found nothing except for avg which says that ntoskrnl.exe has a reading error. ive been reading on this and it seems alot of ppl have problems with avg and the ntoskrnl.exe but mine seems to be completely different than their problems. they all get error messages at boot up and mine doesnt display anything. so PLZ i need help.

I dont know why my computer wont start can someone plz help me?liveupdate

The BIOS Issue

there is a jumper on the motherboard that will clear the BIOS. Check your Mobo documentation for the where. Just pull the jumper and put it back over the open pin and the center pin, then put it back where it was.

Restart and verify that the BIOS is back to normal. If not repeat the above, this time leave the jumper in place for a few minutes.