Facing a Checksum Error with Your PC

A Checksum is a redundancy check that runs for all PCs at startup. All the bits and data that are on your PC are added up and then a hash is created. If the hash matches what it is supposed to be, then all is good, but when this goes wrong a Checksum Error is born.


Checksum Error Symptoms

A Checksum Error will occur at startup most of the time however, it can occasionally happen at a time of normal computing. When a Checksum Error does occur there is a large pop up message that alerts you to the problem. If left unchecked for too long, further symptoms could include an inability to startup your PC properly.


Checksum Error Causes

The most common cause of a Checksum Error is a faulty battery. When this is the case, the motherboard of your PC is not being adequately supplied the power it needs to startup properly. Of course, it could also be that your PC has a virus problem or that your PC’s registry is corrupt and cluttered.


Fixing a Checksum Error

Fixing a Checksum Error needs to be done right away so the problem doesn’t intensify. You should first have your battery checked and make sure it is not going bad. If it is, you will have to replace it. This is not a typical battery so be careful when locating and checking it.


If the battery is okay then you will want to immediately run a virus scan:


  1. Start your PC in Safe Mode by pressing the F8 key  during boot up.
  2. Double-click the anti-virus software icon on your desktop or tool tray.
  3. Select to scan the entire PC.
  4. Delete any and all viruses found.

Restart your computer for changes to go into place and see if the problem persists.

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