In idle (non working) time my hard disk flashes every 1 second

Hi MohTarvirdi,

System services are programs that load automatically either as part of an application's startup process or the operating system startup process to support the different tasks required of the operating system. The services under system services are all operating system related services.

Also Svchost.exe is a process on your computer that hosts, or contains, other individual services thatWindows uses to perform various functions. For example, Windows Defender uses a service that is hosted by a svchost.exe process.

So both these services are essential for your computer to work and cannot be tampered in any case.

But for the resolution of hard disk light flashing in idle time I would suggest you to check in safe mode– In Safe mode; you have access to only basic files and drivers. Refer to the link to start the computer in safe mode and then check -

http://windows.microsoft.com/en-us/windows7/Start-your-computer-in-safe-mode

If you face the issue in safe mode also then you may have to perform a check of the hard disk. Refer to the below steps for the same -

****Use the check disk commands as follows:

 1. Click Start.

 2. In search window type 'cmd' and ENTER. Right click and select 'Run as administrator'.

 3. Type at the command promptCHKDSK C: /Fand press ENTER to repair corrupt sectors, if there are any.

NOTE: The root drive has to be C: and the command may schedule a task at the system startup, if it does, then press Y to schedule a task and restart the computer to perform chkdsk.

Once chkdsk completes, boot to the desktop and then check.

Warning: Microsoft does not recommendinterrupting the CHKDSK process. Microsoft does not guarantee the integrity of the disk if the CHKDSK program is interrupted.For safety you can back up your data before using the check disk command if you can.

You may also refer to the below link for details and check using the steps provided in the article - http://windows.microsoft.com/en-us/windows7/Check-a-drive-for-errors

If you do not face the issue in safe mode then you may perform a clean boot and check in this clean boot state if the issue persists -Also you may perform a clean boot and check if the steps assist you identify the issue.To perform the clean boot follow the step 1 mentioned in the below article and then try check in this clean boot state -

       http://support.microsoft.com/kb/929135

If the issue gets resolved check which non-Microsoft service is causing the problem; referring to the article and following other steps.

**** After you have finished troubleshooting, follow these steps to reset the computer to start as usual:

1. Click Start, type msconfig.exe in the Start Search box, and then press ENTER.

If you are prompted for an administrator password or for confirmation, type your password, or click Continue.

1. On the General tab, click the Normal Startup option, and then click OK.
2. When you are prompted to restart the computer, click Restart.

Hope this helps. Let us know the results.

Thanks,

Meghmala – Microsoft Support

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