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PC hanging

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#1 paulwenman


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Posted 21 February 2012 - 08:04 AM

I have an old Dell which we re-formatted and re-installed the XP Home system then took off all the Dell crap. Though slow it has been doing a fair job for web browsing, emails, word processing. But recently we have had freezing problems.

We have Comodo firewall and Avast! anti-virus. Windows updates are up to date.

Ran CCleaner and registry fix
Ran Malwarebytes with up to date virus database - nothing found
Ran boot-time Avast! scan - nothing found.
Ran Event log showed SPBD, sentinel and adfs file errors.
Ran awsMBR scan - found SPBD driver locked, then awsMBR froze the PC
Ran TDSSkiller - also found SPBD error - medium threat
Uninstalled SPBD
awsMBR now finds no SPBD prob, but still freezes the PC when scanning services - last time it hung scanning mountmgr

The PC seems a bit slow but otherwise functions ok, until it freezes.

Can anyone help?

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#2 quietman7


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Posted 24 February 2012 - 09:25 AM

Slowness, freezing and performance issues as you describe are not uncommon, especially with older computers. You may want to try some of the suggestions in this guide:

If your computer/browser seems to be slow, please refer to Slow Computer/Browser? Check here first; it may not be malware. There are reasons for slowness and poor performance besides malware - i.e. disk fragmentation, disk errors, corrupt system files, too many startup programs, unnecessary services running, too many browser Add-ons/toolbars, failure to clear browser cache, not enough RAM, dirty hardware components, etc. As you use your system it becomes filled with more files/programs and has a natural tendency to slow down and behave oddly so cleaning and regular maintenance is essential. Incompatible browser extensions and add-ons can impact system performance and cause compatibility issues such as application hangs (freezing).

Ran CCleaner and registry fix

While CCleaner is safe and useful for removing temporary and junk files, I do not recommend using the built-in registry cleaner unless you have a good understanding of the registry. In fact, Bleeping Computer DOES NOT recommend the use of registry cleaners/optimizers for several reasons:

:step1: Registry cleaners are extremely powerful applications that can damage the registry by using aggressive cleaning routines and cause your computer to become unbootable.

The Windows registry is a central repository (database) for storing configuration data, user settings and machine-dependent settings, and options for the operating system. It contains information and settings for all hardware, software, users, and preferences. Whenever a user makes changes to settings, file associations, system policies, or installed software, the changes are reflected and stored in this repository. The registry is a crucial component because it is where Windows "remembers" all this information, how it works together, how Windows boots the system and what files it uses when it does. The registry is also a vulnerable subsystem, in that relatively small changes done incorrectly can render the system inoperable. For a more detailed explanation, read Understanding The Registry.

:step2: Not all registry cleaners are created equal. There are a number of them available but they do not all work entirely the same way. Each vendor uses different criteria as to what constitutes a "bad entry". One cleaner may find entries on your system that will not cause problems when removed, another may not find the same entries, and still another may want to remove entries required for a program to work. Further, some vendors who offer registry cleaners use deceptive advertisements and claims which are borderline scams. They may alert you to finding thousands of registry errors which can only be fixed and improve performance if you use their product.

:step3: Not all registry cleaners create a backup of the registry before making changes. If the changes prevent the system from booting up, then there is no backup available to restore it in order to regain functionality. A backup of the registry is essential BEFORE making any changes to the registry.

:step4: Improperly removing registry entries can hamper malware disinfection and make the removal process more difficult if your computer becomes infected. For example, removing malware related registry entries before the infection is properly identified can contribute to system instability and even make the malware undetectable to removal tools.

:step5: The usefulness of cleaning the registry is highly overrated and can be dangerous. In most cases, using a cleaner to remove obsolete, invalid, and erroneous entries does not affect system performance but it can result in "unpredictable results".

Unless you have a particular problem that requires a specific registry edit to correct it, I would suggest you leave the registry alone. Using registry cleaning tools unnecessarily or incorrectly could lead to disastrous effects on your operating system such as preventing it from ever starting again. For routine use, the benefits to your computer are negligible while the potential risks are great.

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