Problems on the PC. If the PC will not react after the turn

If your PC is no longer responding after a beep is turned on in addition to out-she actually wanted to show an error message.
How to interpret the most important signals from the BIOS?
We regrouped last beep bios worn by type:

AMI-BIOS
1x: RAM defective or not installed properly.
6x: Error Gate A20 - usually indicates a damaged keyboard.
8x: Graphic card is damaged or not installed correctly in the slot.
11x: Checksum-Error. Check the battery on the motherboard.

Award-BIOS
Long-1x: RAM Error, the module is not seated properly.
Long 1x, 2x short: Graphic card defective or damaged.
Long 1x, 3x short: Keyboard broken or not installed (from version 4.5 of this signal indicates an error graphics card).
Unbroken: RAM or graphics card is not found.

Phoenix-BIOS
1x-1x-4x: BIOS corrupted.
1x-2x-1x: Motherboard damaged.
1x-3x-1x: RAM problem, the module is not installed properly.
3x-1x-1x: Motherboard damaged.
3x-3x-4x: Graphic card is damaged or not installed properly.

So, next time if your computer beep sounds, live match bios, and definitely out what parts are problematic.

Hopefully this information can assist in the improvement.