After installing graphics card my pc restarts several times giving error message ur last boot failed or post interrupted press f1 to continue or del to enter setup im using ati radeon 5770 graphics card i've re installed the OS yet the messag comes can anybody suggests me a good solution

Yes, you can make USB boot drive. However main problem is the Smart... error. It is your hard drive. You need to fix that first! Try reseating the drive. Next go into BIOS by pressing F key during boot. Might be F2? Make sure BIOS recognizes the hard drive.

Once you get the drive going again, you can start the install / repair again. USB drive tool.
http://www.microsoftstore.com/store/msstore/html/pbPage.Help_Win7_usbdvd_dwnTool

Your Hard Disk Drive is crashing or has crashed. You need to buy a new hard disk drive, and then you will have to reinstall windows and start over.

to resotore the computer to factory setting is done by clearing cmos to clear cmos you need to remove the cover of the computer and search for the battery in the motherboard remove the battery and also remove the power of the hard disk then start your computer then after the post you will see boot error then shutdown the computer remove the plug from the back of the computer then insert the battery and connect the hpower to hard disk and plug in back the power supply and restart your computer when restarted you will the message cmos rested pres del to enter bios and f1 to install defult option press del and change the date and time and press F10

Hey there,Im pretty sure this is becuase one of 2 reasons:
Possiblity 1:That you have not inserted your video card correctly and some adjusting to its position on your motherboard should help(or even another pci slot if possible)

Possiblity 2:That the Card is not compatible With your system which is unlikley..

Regards,Finphillips

Please rate me

Your operating system corrupted, so please reinstall your OS. and please detected all devices on bios system. 

Open cpu cabinet and Refix RAM some times bootable files not load on ram properly so this error comes.
So refix RAM memory clean dust from circuit and RAM .
Also pull cmos cell from motherbord for 5 minutes so all settings are defaults then check.

Please go into the BIOS of the system and Set the BIOS as default

1. Restart your computer.
2. When the computer first starts, it performs the power-on self test (POST). This test checks that all connected devices are functioning. As part of the POST, the memory is checked. During the memory test, a message will appear that tells you how to access the BIOS. For example, you may see the following message or a similar message that explains how to start the BIOS setup: PRESS DEL TO ENTER SETUPIn this example, you must press the DEL key immediately after the memory test is finished to start the setup process. You may have to press the key several times to make sure that you access the BIOS setup.
   
   Tip There are other keys that may provide access to the BIOS. They include the following:
   • F1
   • F2
   • F10
   • CTRL+ENTER
   • ALT+ENTER
   • CTRL+ALT+ESC
   • CTRL+ALT+INSERT
   If you are not sure how to access the BIOS setup, see the user manual for your computer's motherboard.
3. Look for the Set BIOS as Default settings. You can usually use the arrow keys to move through the menus and settings.

Do that and then try to

Regards

Hi Robert,
please try these troubleshooting steps,
Resolving the blank screen Follow the instructions below in order to fix this issue:

1. Remove any CDs, DVDs or memory cards from the computer.
2. Disconnect all devices from the computer leaving only the original mouse, monitor and keyboard and power cord connected.
3. Restart the PC. NOTE: If this resolved the issue, see the Preventing the blank screen section at the end of this document.
4. Press the F1 key repeatedly during the first startup screen until the entering setup message appears.
5. Press the F5 key to restore the default settings. Use the arrow keys to select YES and press ENTER .
6. Press the F10 key to save the changes and exit. Use the arrow keys to select YES and press ENTER . The PC restarts.
7. When the system restarts select Last Known Configuration from the boot menu. The PC should now startup normally. If the blank screen persists continue with the following steps.
8. Select Safe Mode from the Windows Advanced Options Menu .
9. Use Microsoft's System Restore feature to restore your computer to an earlier time and correct the issue.

Can you post the error please?

I need a bit more info to try to give you an accurate solution

Does the screen change after you press "F1" ?

Do you have access to an external keyboard, if so try plugging that in while the computer is off and then using that to press "F1"