The reason why computer PE systems can't enter

Computer shop news I don't know why, my computer can't install the system now, even PE can't enter it. If I use the installation disk, it will be black screen at the beginning! The computer was an assembled computer purchased from Computer City last year. It cost nearly 4,000 yuan to buy. The computer configuration is dual-core alone. It is not bad. Usually, there are no problems in playing some large games. However, the hardware has never been repaired before, and the problem is also on the system. The problem, this time I don't know if it is a system problem or a hardware problem.

User analysis and answer: 1. Graphics card, memory, hard drive are re-plugged. Can the security mode be entered? Try the last time the correct configuration. 2. Enter the hard disk mode under bios settings, set to compatibility (compatible mode). 3. Automatic shutdown? Yes, look at the power switch jumper and restart button jumper on the motherboard is not broken!! Short-circuit switch to test, change the power and memory test! No longer the motherboard problem. 4. I have encountered before, it is the problem of the motherboard, and it can be solved by repairing it. When there is a problem with the hard disk, replace the hard disk interface board and re-partition. 5. When the PE is not installed, the universal graphics card is not installed. Try to go in. It is best to see if the motherboard is hung.