Your issue is a little more difficult Corrupted file system or failing drive, and failed RAM are the 2 most likely suspects. You can try this first: 1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and select Run as Administrator. 2. Click Continue or supply Administrator credentials if prompted. 3. In the Command Prompt window type the following, and press Enter: sfc /scannow 4. You should see the following on-screen messages: Beginning the system scan. This process will take some time. Beginning verification phase of system scan. Verification % complete. 5. Once the scan has completed you will receive an onscreen message resembling one of the following: …found no integrity violations …found corruption but repaired it …found corruption that it could not repair You can also get your hands on a copy of memtest86 and check your computer's memory.
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