What was happening before this occurred? What happens when you restart? When you remove battery and use power adapter alone? Are there error messages? beeps? Can you reach BIOS setup? Does everything look 'ok'? Is fan spinning, etc, etc, etc.?
When I restart it works fine untill blue screen appears again.
No messages or beeps comes sometimes it shows blue screen with message like
DRIVER_IRQL_NOT_LESS_OR_EQUAL.
Sounds like you have an overheating unit which needs a thorough cleaning. This is a delicate operation and needs a large well lit worksurface and a couple of towels for padding. You will also need canned air.
If this proves to be insufficient, you will need to open the system and clean under the fan shroud and through the ventilation channels all the way to the screened outlet ports. When the system is so fully disassembled, it is wise to renew the thermal paste under the heat sinks - but be careful to not injure any thermal pads. For this, you will need small handtools, plastic spudgers, thermal paste, isopropyl alcohol and good mechanical skills. Keep track of each screw as you must put them back exactly as they were removed. There are several connectors which are difficult, so examine closely and be certain of their operation before trying to take them apart. Strong light and magnification is needed.
So, please confirm:
- system runs fine for about an hour
- it then crashes with a blue screen - sometimes with message DRIVER_IRQL_NOT_LESS_OR_EQUAL
- "The fan is working properly but sometimes it overheats."
- "over heating is not the problem"