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Yesterday, I have downloaded and installed Windows 8 Professional, after downloading it (legally) and burning it to a DVD, on my 3-year-old Dell Studio 1555 (Intel Core Duo 2x2.4 GHz, 4 GB RAM, Toshiba MK2555GSX hard disk drive).

The installation failed two or three times, each time differently (error codes, for example 0xc000021a, with an infinite boot loop), but finally I completely formatted the hard drive and installed. Seemingly, everything was OK.

However, after booting successfully, the OS is extremely slow. When I open the task manager, it shows that the HDD is at 100% - however, no application or background process or Windows process can be made responsible. I searched the Internet and found that Windows might try to "index" the hard drive, but I did't find a process that isn't also on my second computer, which still uses the Release Preview (restarting every two hours). Also, the startup is empty, and HD Tune and HDD Health show that the drive health is OK, even though I don't know how reliable these two programs are.

I looked for diagnose software from Toshiba, but they only offer tools for "Fujitsu branded Toshiba devices"; I tried it out, and it did not work on my hard drive.

Does this sound like a hard drive failure? The laptop is 3.5-years-old, has been carried around sometimes roughly and was used (and on) most of the time. However, it would have failed exactly the night before installing Windows 8 Profesional, which seems - unlikely.

If this is a software error - then what did I do wrong if this occurs from the moment of installation (even the personalization at the end of installation took half an hour)? How can I fix this?

Screenshot of taskmanager (Disk 1/drive E:\ is an external USB hard drive) The processes, none of which is shown to use the hard drive specifically The second half of those processes Screenshot of HDD Health and HD Tune on the health of the drive

Marie. P.
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  • Try enabling the hard drive stuff in task manager's processes tab. As I recall, you can click view->columns... and it will give you a bunch of checkboxes including writes, reads, etc. – Jakob Weisblat Jan 18 '13 at 00:37
  • hmm, I cannot find that; according to Microsoft, that's how task manager worked in Vista: http://windows.microsoft.com/en-US/windows-vista/What-do-the-Task-Manager-memory-columns-mean

    Clicking on View gives only Refresh now, Update Speed, Group by type, Expand/collapse all, status values; and I could not find anything to display what you mean.

    – Marie. P. Jan 18 '13 at 01:01
  • Sorry - haven't used Windows in a few months. Does right-clicking show that? – Jakob Weisblat Jan 18 '13 at 01:02
  • Right-clicking on the columns themselves allows to add columns like Type, Publisher, PID, Process name, Command line, and those that are already displayed (CPU, Memory, Disk, Network) – Marie. P. Jan 18 '13 at 01:06
  • OK - If you sort by disk column, what is on top? – Jakob Weisblat Jan 18 '13 at 01:07
  • Service Host: Local Service (Network Restricted) (6) - 0.1MB/s;

  • System - 0.1MB/s;

  • Services and Controller app - 0.1MB/s

  • The first one contains: DHCP Client, Security Center, TCP/IP NetBIOS Helper, Windows Audio, Windows Connection Manager, Windows Event Log.

    – Marie. P. Jan 18 '13 at 01:41
  • looks like the hdd dies. Look at the reallocated sectors. http://en.wikipedia.org/wiki/S.M.A.R.T.#Known_ATA_S.M.A.R.T._attributes you should replace the HDD. – magicandre1981 Jan 18 '13 at 04:55
  • Since you have a faster CPU then I do on my desktop and I have no problems it sounds like your hdd is failing. The fact you had to format your hdd before the installation works also points to that fact. – Ramhound Jan 18 '13 at 11:53
  • I used HD Tune to do a full scan of the blocks, and got that 0.6% are damaged/colored in red. For the SMART-results, what does the number "231" in the "data"-column of reallocated sectors mean? What is the size of one sector? I read that this means the hard drive is not in a good condition, but could still be operating for some time, and my problem could be caused by something else? Anyway, a new SSD was already my thought for some time, so I guess I'll replace the HDD. – Marie. P. Jan 18 '13 at 18:51
  • http://en.wikipedia.org/wiki/Disk_sector You should really replace the disk. I'm using the Samsung 830 256GB SSD on my desktop. Give it a try in your laptop. – magicandre1981 Jan 19 '13 at 06:24