How to make my computer super fast without any risk?

                                               

   

                                                Instruction :- 1

1.start>>Run >> Msconfig>>Select selective startup>>Startup tab>> uncheck services which you wont need (google out the service name, if you are unable to identify what a listed service does....)
or
right click my computer >>manage>>services>> stop unwanted services
2. keep minimum data on desktop
3. delete temp internet files and folders , right click internet explorer>>properties >>delete files, delete cookies
or
Start>>Programs >>Accessories>>System tools>>Disk cleanup
4. deltete files from c :\windows\temp
5. Defragment ur hard drive
right click dirve in my computer, properties, defragment tab
6. do a full anti virus scan
7. Spyware and adware scan using free spyware scanner 

                                                   Instruction :- 2

- Doing a disk De-fragment
- Doing a disk cleaning
- Keeping your computer virus and malware free ( viruses can slow down your computer)
Suggested: Avast / AVG / Bit-defender (any antivirus) and Malware bytes
- Registry cleaning (errors can also slow down your computer)
- Clearing your temporary files
- Not having a lot of programs (Uninstall all unusable programs)
 - Ccleaner is much more effective in this case.

You can follow any of the instructions described above.