先日パソコンを使ってると以下のブルスクが表示されました
A problem has been detected and windows has been shut down to prevent damage
to your computer.

DRIVER_POWER_STATE_FAILURE

If this is the first time you've seen this stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check to make sure any new hardware or software is properly installed.
If this is a new installation, ask your hardware or software manufacturer
for any windows updates you might need.

If problems continue, disable or remove any newly installed hardware
or software. Disable BIOS memory options such as caching or shadowing.
If you need to use Safe mode to remove or disable components,restart
your computer, press F8 to select Advanced Startup Options, and then
select Safe mode.

Technical information

stop:0x 0000009F

Collecting data for crash dump...
Initializing disk for crash bump...
Beginning dump for physical memory.
Dumping physical memory to disk :50
電源アダプタから異音(コイル鳴き？)がしたためまず電源アダプタを取り替えて再起動しました
その後15分程度は普通に使えてましたが15分を経過したあたりからインターネットに接続できなくなり
30分程度で画面が真っ暗になりしばらくして上のブルスクが表示されます
どうすればいいでしょうかご教示お願いします