My laptop is showing blue screen of death

"when you said you installed another HDD was that a NEW one? Get a cheap NEW one.

Install a basic system on the drive and see how it goes."

"How to Fix Error “whea_uncorrectable_error” on Windows 8.1, Windows 10

Quick solution to fix “whea_uncorrectable_error” in Windows 10

Step 1: Download this PC Scan & Repair tool

Step 2: Click “Start Scan” to find Windows issues that could be causing “whea_uncorrectable_error” in Windows 10

Step 3: Click “Start Repair” to fix all issues.

Solution 1 – Disable Overclock in BIOS

The most common fix for whea_uncorrectable_error is disabling overclock from your BIOS. To do that, just follow these steps:

Open Start Menu and go to Settings

Go to Update and Security, and then to Recovery tab

Click on Advanced Startup and your computer will restart

On advanced startup, Go to Troubleshoot, then Advanced Options and then UEFI Firmware Settings

Click Restart

After the computer is restarted, it should open BIOS automatically, so go Advanced tab

Than to Performance, and look for Overclocking

Make sure overclocking is disabled

Save changes to BIOS (by pressing F10 on your keyboard), and start your computer normally

After disabling overclocking, you shouldn’t face this issue anymore, but if it’s still present, check out one of the following solutions.

Solution 2 – Start Windows in Safe Mode and Check for Drivers

Reboot or close the Windows 8.1, Windows 10 PC

When the PC starts press “F8” on the keyboard or another combination would be “Shift + F8”."

what do it mean it keeps rebooting

"Window 10 users often face blue screen of death errors. I faced this issue before and I tried like 5 different methods. There are several reasons that can cause this error. I cant explain every step in detail but I think anyone who is facing this issue would be able to understand or you can read this article: Fix WHEA_UNCORRECTABLE_ERROR (Thoroughly explained)

One of the following step will sort out the problem:

1. Disable Overclock in BIOS

2. Fix Corrupted or Incompatible Device Drivers

3. Uninstall any recently added Application

4. Fix Corrupted Windows System Files

5. Use Memory Diagnostic to fix Memory ( RAM ) Errors

6. Scan and Check Hard Disk for errors

7. Fix Corrupted Registry Files

8. Restoring Windows back to an earlier point in time"

Go to your BIOS and change to factory settings. If you can get the Laptop to work my advice is to get the latest video card drivers if possible.if this doesn’t work you might try to find another solution here.