Blue screen says i need tech support

Read the complete solution please-
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Depending on what the error says you may not need to contact technical support. Often this happens when the swap file becomes corrupted and since it is used as virtual memory, the OS assumes it is RAM that is defective. So it generates a system level error.

To correct this....
See if you can start in SAFE MODE, go to System Properties
Select ADVANCED tab
Select PERFORMANCE settings
Then Advanced tab again
You will see Paging File Size in the middle.
SET/Change this to 0 (zero) NO PAGING FILE
Select OK to continue

No Paging files for all drives if you have multiple partitions (logical drives)

Then save/ok your settings.
Then REBOOT
Repeat the above process and set the swap file to 2-3x the amount of ram you have in your system.
Or simple select the System Manage Size button.
(example: 1gb Ram = 2gb Virtual Memory)

Save setting and reboot again.

1: Why do I have to Reboot after each time?
because the system removes the swap file writes the changes to the registry.

2: How did my swapfile get corrupted?
sometimes a bit/byte get lost because of improper shutdown, power loss, badly designed programs, trojans and a number of unexpected issues.

3: Do I need to buy more physical ram?
only if you are using less than 1GB (with XP) or
2GB with Vista.

Good Luck