Computer will restarts due to this following problems:
- Faulty powers supply
- Defective RAM (Random Access Memory)
- Faulty harddisk drive
- Overheating on CPU
- Overheating on harddisk drive.
- Hardware problems
- Sometimes due to crashes of Operating System
- Virus
Power Supply:
Loss contact on the sockets from power source can cause restarting. Check all your connections and try it on for another time.If it restarts again then replace you power supply.
Defective RAM:
Rusty and dusty RAM can cause loss contact from its socket. Remove your memory stick and clean it. Read on this.
Faulty Harddisk:
Faulty hard disk is one of the most common reasons for abrupt computer restart. Run a hard disk scan to fix this issue. If there are bad-sectors, then replace it.
Overheating on CPU:
CPU overheats when your cpu fan won't function, maybe your fan won't turn because some wires block it. Most motherboards have CPU temperature setting a their BIOS setup.
Overheating on Harddisk:
Harddisk overheats when there's no proper ventilation on it's area. When harddisk overheats it won't work as nornal.
Hardware Problems:
Defective motherboard can also cause restarting. Chances of motherboard to be repair is very low, so you must contact a computer technician to check it and buy a new one.
Crashes of Operating Systems:
Sometimes a software can also be the culprit behind the computer restart. If you have recently installed new programs and other application you must uninstall it in order to fix your problem. Corrupted boot sector can cause restarting. To fix this click here.Virus:
Some computer viruses are written to reboot your computer without warning. Usually these viruses will make the computer reboot ever 5, 10, 15 or 30 minutes after the computer has booted.