(1) Speed Slow (2) Booting issue (3) Internet not working (4)forget windows password
(1) PC Running Slow!!
1. First Delete Temporary files.
2. Run Ccleaner & cleanup the pc.
3. Run DiskCleanup in windows.
4. Run Disk Defragmenter in windows.
5. Uninstall unwanted software or use Revo uninstaller.
6. By using msconfig command & stop all startup services.
7. Scan for virus using Microsoft security essential.
8. Open Task Manager & check the performance CPU & memory usage.
9. Check and auotmatic fix the issue.by using windwos tool use performance info & tools.
10. By default Visual Effect is Best appearance & change into best performance.
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(2)Booting Problem in windows!!
1. First try to open in safe mode.
2. if safe mode not work then put windows disk. use the startup repair tool, in advanced option in safe mode.
3. Sytem Restore another good option.
4. Try booting off Ubuntu CD & try ubuntu & find out that this is software issue or hardware issue.
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(3)Internet Not working!!
1. First check using Ping command.
2. Disable & enable the Lan connection.
3. Go to network connection then chooose lan & click diagnose this connection.it will fix problem automically.
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Forget windows Password!!
1. Recover using Ubuntu
2. Recover using NT-Offline Password.
3. Recover using Hiren-Boot CD.