Because several readers write about their computer reacting slowly, I am posting a summary record of general things you can do to solve the 0xc0000021aproblem, and briefly discussing the three most frequent causes : malware, uncontrolled applications, and insufficient care.
Possibly the most important contributor to a poorly performing computer is malware. Often this is related to downloading a software that contains spyware, by not having browser security options large enough, by carelessly downloading P2P files, or by declining to install security sections in a timely manner.
Action 1. Revise the explanations of your antivirus and run a complete scan of your hard disk drive in Safe Mode. Resolve any unfixable problems. Note that some infections need extra steps until they could be removed; ordinarily a web search will find specific instructions or a particular removal tool. Use the BC forums to obtain assistance, if you can’t find a answer.
Step 2. You’ve recently saved an application, and if the slowness is abrupt, the issue might dwell there. Test this by completely eliminating it. A smart user will generally perform a web search about the application before downloading it because in most instances, any potential problem with malware or poor performance will have surfaced.
Step three. Adware and Spyware can drastically impact your computer’s functionality, and these are around the Web. A very recent study showed that one out of every 20 executable files on Web sites is spyware, and 1 in 25 domains contain at least one bit of spyware waiting for victims.
Update the definitions of your anti-spyware applications and scan your hard drives in Safe Mode. Seasoned customers will often operate 2 or 3 of these programs, because each company has its own criteria for what constitutes spyware and will just search against their own set. (A set of really great, free antispyware applications is provided by BC). Again, resolve any open issues before proceeding to the next step.
For further reading about Malicious software and some malware removal applications, use BC’s Tutorial section; most of the applications have quite good Help documents that explain how they work too as the unique characteristics of each.
Step 4. Evaluation programs that self-start on startup. You computer can become a arena for your interest. Many programs, for example, install a quick-launch feature that permits them to be opened quickly; other programs may comprise an automatic update feature that demands them to be running in the background. Your launching Windows are slowed down by each of these and each needs a small bit of resources while your computer is running.
The simplest approach to review and than to handle startups will be to use one of the numerous little utilities available (see the Bc list of free apps). You may use its startup tool that lists startups and lets you to turn off any you don’t want, if, for example, you have Spybot Search and Destroy. If you are uncertain about what could be safely removed, remember that Bc maintains a very complete Startup Database that includes information about whether the questioned item is needed, discretionary, or not needed.
At-the same time, remember that those icons in your Background also take a small number of trunk time to place themselves.
Absence of Maintenance
Stage 5. Clean up your hard drive (preparation for Step 7). Delete unused applications and exchange old files to a CD. Unplayed games, lots of family pictures, zipped files that you have opened, applications you haven’t found in two years, software for that old printer you put away last year—these are a few types of files you can delete.
(Note for sophisticated users: some experts would include the additional care stage of cleaning the Windows registry, and you will find several programs to assist do that. For the most part, so this measure isn’t included, you may do severe harm by creating registry modifications, registry care won’t make a major difference, and unless you are really comfy with Windows, and cautiously make backups of the registry
Action 6. Run scandisk / checkdisk in Safe Mode. Have it mend 0xc0000021a.
Step 7. Defragment your personal computer.
Hopefully, since you have have concluded, you’ll see a marked improvement in pc functionality.