What is Bad Checksum?
141542
This message indicates that there is some corruption on the link or connection, and that your connection is not 100% reliable. It also means that the file you just downloaded is corrupted so therefore you need to re-download it.
362633
If you are running etherguard firewall - this causes this error it's quite common.\n\nAnother cause is the SMC network card.\n\nBoth of these cause the runtime error you mentioned.\n\nI recommend you try downloading Ccleaner, it fixes a lot of errors then if the above haven't helped download Hijack This and post your results on the website and some one will tell you what to do to fix it
283719
it's because you have a bad sector there, if the bad sector is physical you can do nothing, you have to block that place, and if it's logical, then it will be cured, first, go to command prompt, but restart in msdos mode, from there you type scandisk, and do a scan, a full scan, might solve the problem,
779362
you've got errors on the drive or its going bad if you read it it says what the problem is
41776
Not software!!!!! Bad RAM!!!!!!!!\nEither mismatched or just plain evil. Have you done an upgrade recently?
222666
if validating is this important for you, easiest solution..backup all your data and reinstall fresh.\nthe validation tool is such a nightmare if things go awry.
474807
what type of errors  u r getting. whatever it is, it is safe to delete errors always. dont worry.
40815
It's part of an antivirus system. Check the vendor's web site.
843339
You most likely have a virus and/or a corrupt file.  Search the exact error message on a working PC and see if there is a removal tool that you can download to use on the affected PC.
896095
check? what do you mean? are you using pirated software?
230396
Assuming that the actual message is : Keylib error: #38 LICENSE FILE CHECKSUM INVALID\n\nYou either have a virus/trojan in that file (run a scan)\nor you are using an incorrect key for that version.\nUninstall, reinstall put the key in again and see if it works.\nIf it is a licensed version email incredimail support.
406933
http://www.mcse.ms/archive217-2005-5-1645242.html\nhttp://www.techspot.com/vb/topic47729.html\n\n^^ Those links will take you to forums that talk about those specific errors.\n\nGood luck!
963949
for error 1324 (The folder path folder name contains an invalid character)\nTo verify the performance status of your computer, follow these steps: 1. Right-click My Computer. \n2. Click Properties. \n3. Click the Performance tab. \n\nIf you see the "Your system is configured for optimal performance" message under Performance Status, your computer is using 32-bit CD-ROM drivers. \n\nIf you see a message that states that some drives are using MS-DOS compatibility under Performance Status, you may be using real mode (16-bit) CD-ROM drivers. If this is the case, you may not be able to read certain files on the CD. \n\nContact the manufacturer of your CD-ROM drive to obtain an updated, protected mode driver for your CD-ROM drive. For information about how to contact the manufacturer of your CD-ROM drive, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base: \n65416 (http://support.microsoft.com/kb/65416/) Hardware and Software Third-Party Vendor Contact List, A-K \n\n60781 (http://support.microsoft.com/kb/60781/) Hardware and Software Third-Party Vendor Contact List, L-P \n\n60782 (http://support.microsoft.com/kb/60782/) Hardware and Software Third-Party Vendor Contact List, Q-Z  \n4. Close Properties. \n5. Double-click My Computer. \n6. Right-click drive where drive is drive letter of the hard disk where Microsoft Windows is installed. \n7. Click Properties. \n8. On the General tab, note the quantity of available hard disk space under Free space. • Microsoft Works 2000 Standard requires 135-150 megabytes (MB) of available hard disk space. \n• Microsoft Works Suite 2000 requires 820 MB of available hard disk space. \n \n9. Click OK, and then close the My Computer window. \n10. To verify the microprocessing power of your CPU, see the documentation that is included with your computer, or contact your hardware manufacturer. • Works 2000 Standard requires a Multimedia PC with a Pentium 90 megahertz (MHz) or higher processor. \n• Works Suite 2000 requires a Multimedia PC with a Pentium 166 MHz or higher processor. \n \nfor error 1603 (Fatal Error During Installation)\n\nError 1603 is a generic machine-specific issue. One or more of the following fixes may resolve the error.\n\nThis error is known to occur on computers that do not have enough disk space for the installation. To increase your hard disk space, follow the instructions in How Do I Increase Hard Disk Space on My Computer? \n\nThe Temp directory is not clean. To clean the Temp directory, follow the instructions in Clean the Temp Directory. \nA certain file on the machine is locked. To fix this: \n\nClose all applications running in the background. \nReboot your computer. \nRun the installation again.\n\nIf you are using Windows 95, 98, ME, 2000, or NT, the Windows Installer Service may not be properly installed on the machine. Update the system with the latest Windows Installer Service by following the instructions in How Do I Install the Windows Installer Engine on My Computer? \n\nOn Windows NT, 2000, or XP, make sure you have administrative privileges. To confirm you have administrative privileges, follow the instructions in Acquire Administrative Privileges on Your Computer. \n\nUse Microsoft’s Windows Installer Cleanup utility to remove traces of previous installations. This utility does not remove files installed by the installation, which may need to be removed manually. For more information, refer to Microsoft’s Knowledge Base article Description of the Windows Installer CleanUp Utility.\n\ngood luck
278874
doesn't look very good to me\n\nhave you tryed virus scanning it
1132625
This is a good MD5 checksum tool for Windows that I use for some of the forensic work that I do. It's easy and free .. the best kind.\n\nFastsum http://www.fastsum.com/\n\n=========\nHere's the MS version.  I've never used it, but it's probably okay.\n\n"Availability and description of the File Checksum Integrity Verifier utility"\nhttp://support.microsoft.com/?kbid=841290
145614
I would think it is H-Key Local Machine, a part of your computers registry that you should definitely stay away from, since you are asking what it is.  Making changes to your registry can cause your computer to fail.
640495
I would go to C drive in control panel right click on C drive go to properties then tools and do a good defrag and disk check - If disk check finds and fixes just a few bad files all is well. If it finds a bunch - Start saving you pennies and backing up data!!! You can also do the above in safe mode by hitting F8 while windows is booting. This is the more effective way but it also has a little more risk of changing a few files.