Follow the simple steps mentioned in this tutorial and your problem will be solved:
1. If Folder Options is disabled but Registry Editor is still working in your system, then you can enable Folder Options by editing Windows Registry.
Type regedit in RUN dialog box and press Enter.
itll open Registry Editor, now go to following keys:
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrent VersionPoliciesExplorerHKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrent VersionPoliciesExplorer
In right-side pane, check whether a DWORD value named NoFolderOptions exists or not? If it exists, delete it.
2. If you are not familiar with editing the registry, then you can simply download following file, extract it and then run the .REG file:
Folder_option.zip
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If u cant run regedit ....
Seems like your system is infected with a virus. Pls follow following link:
http://www.askvg.com/is-your-system-infected-with-a-virus-spyware-adware-trojan/
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Some ppl find that "show hidden files and folders" option ll not b enabled..
though enabled they cant c the hidden folders...
for that dont worry
--open RUN
--type regedit
--HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrent VersionExplorerAdvanced
And in right-side pane, change value of Hidden to 1 and refresh My Computer window and youll be able to see hidden files again