Screen locks up and screech sound from speaker.

Hello. I recently having this problem with my computer. It randomly locks up, mostly few minutes after it boots up and a loud screech sound comes from the speakers. I thought it was something wrong with something i installed so i deleted the old partition and trying to install a new window 7 but it locks up during installation on the "installing features". Now I am stuck where i can not even boot up my computer. I am thinking there is something wrong with my RAM or hard drive. What should i do?


My computer set up is

Mother Board : ASUS M4A77TD AM3 AMD 770 ATX AMD Motherboard
Newegg.com - ASUS M4A77TD AM3 AMD 770 ATX AMD Motherboard

Graphic Cards :XFX Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16
Newegg.com - XFX Double D HD-687A-ZDFC Radeon HD 6870 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity

Power Supply : OCZ Fatal1ty 550W Modular Gaming Power Supply
Newegg.com - OCZ Fatal1ty 550W Modular Gaming Power Supply compatible with Intel Sandybridge Core i3 i5 i7 and AMD Phenom

Processor : AMD Athlon II X4 630 Propus 2.8GHz Socket AM3 95W Quad-Core Processor
Newegg.com - AMD Athlon II X4 630 Propus 2.8GHz Socket AM3 95W Quad-Core Processor ADX630WFGIBOX

RAM : CORSAIR 4GB (2 x 2GB) 240-Pin DDR3 1333 Dual Channel Kit Desktop Memory Model
Newegg.com - CORSAIR XMS3 DHX 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model TW3X4G1333C9DHX

DVD Burner - Lite-on DVD BURNER with lights scribe.

Hard Drive - 1 TB . Seagate hard drive.

I recommend you starting with a memory diagnostics.
Luckuly for us we have a nice member already made a nice guide on how to test RAM.
RAM - Test with Memtest86+
I suggest method 1 and 2 whichever is more convinient for you.

The memory should be tested a minumum of 2 hours and a total of 12 hours or more recommended.
If you do get memory erros continue into part 3 of the guide.

Lets do 1 step at a time

Bad blocks on your HDD can not be fix. I have heard of ways to workaround it but, i would suggest just sending your HDD back if still under warranty or buy a new one.

Otherwise Low Level Format is your only option, more information here How Do I Low-Level Format a SATA or ATA (IDE) Hard Drive?

Before actually starting the process please ask away, do not take this assignment lightly. Any and all data that was originally on your HDD will be unrecoverable afterwards.

It pass the memory test? Yes or No?
It failed the seagate HDD diagnostics? Yes or No?

What do you mean by heavy program?
Will the computer stay on just fine if left on for a period of time?

Now that your computer actually loads and boots up fine, do you still get blue screen of death?
if so please follow this procedure
https://www.sevenforums.com/crashes-d...tructions.html