I have been having an issue with my computer rebooting it's self and freezing up all the time. I don't even have to be on the internet for this to happen. I have reloaded my os several time and that still has not fixed it. can any one give me any ideas on how to fix this issue.

It is too bad you reinstalled your OS - that is almost always a last resort option simply because it is rarely the fix.

Rebooting and freezing is typically a hardware, or hardware driver problem - often due to heat, HW failure, or a stressed or failing PSU.

Sadly you told us absolutely nothing about your computer - motherboard or PC brand and model - or if it is even a PC or notebook. Have you made any changes lately. When did the problem start?

I gotta put my two sense in here Digerati XD. It sounds like a notebook because I've noticed this alot more times with Laptops than with PC's. I would suggest using compressed air on the fan, tilt the laptop at an angle and spray the air in short bursts. Dust is one of the best condesners of heat in a computer. And as Digerati's signature goes, heat is the bane of all electronics. But yes, please give us more information, just in case dust isn't the issue here.

My computer is a Compaq Presario PC, it has an Intel Pentium 4 HT processor, CPU is 3.20 HGz and 1.50 GB's of ram. we have changed the power supply thinking it was being caused by that. I have been having this issue for about 6 months to 1 year. Because my house gets very dusty I use the compressed air to keep the dust out of my computer quite often (about once a month).

The hardware, software & drive failure are the main causes for rebooting & freezing up of PC. Try the followings:

1. restore your pc
2. check the ram is working properly
3. re-install motherboard drivers


Still facing the problem. Call a technician.