[quote= I checked the Cmos and fond the date had been reset to 2002. I corrected that error and looked over the other Cmos setting and found nothing wrong. I restarted and was able to browse once again but I noticed the fans were running at full speed all the time. Normally you can’t even hear them....... Now the fans run full speed all the time and the computer is very slow with an excess of hard drive activity and it must be shut down this way every time. Does anyone have any suggestions please.[/QUOTE]
If the computer lost the date and time, that definitely means that the battery got affected when the energy went out. First you need to try replacing the CMOS/BIOS memory. Did the time and date keep changing?
If not the battery, it could be a hardware problem. You have three main options, Motherboard, Memory Ram Sticks, and CPU. That normally happens when the computer shuts down because the lack of power.
CPU and memory on my experience are the first things that can get damage more easily than the MOBO.
If the computer keeps starting up after 5 to 10 seconds, there could be special settings on the BIOS that you need to check. CPU fan running faster and louder means that the CPU is overheating or the settings inside the BIOS were changed after the energy went out and CMOS chip lost power.
the computer is very slow with an excess of hard drive activity
It could mean you have a bad drive or you have a virus. Sometimes virus live for a long time inside PC and user never see them. Until they start cracking up the computer.
Now this is only general advice, this means I can be right or wrong. So use your own experience.