Short version: I went from having "data error" hell during the installation to having a good installation. Both the bad situation and the good situation were on fresh installs of 64-bit Windows 7. The things that changed between data error hell and having a good installation were:
- Manually set RAM speed in the BIOS. I acutally set it to slightly below the rated speed of my RAM.
- Disabled onboard audio and got rid of the audio drivers supplied by the manufacturer.
- Made sure the motherboard had an adequate supply of power.
- Installed an OEM SB Audigy card (model SB0160) that I've had for at least a few years.
- Either did not install DirectX or installed it after the game was installed (just don't remember).
- Fresh installation of Windows 7.
My current opinion is that items 1 and 2 probably had an impact, item 3 might have had an impact, and items 4, 5 and 6 had no impact.
Long version:I built a new system with all new components: Win 7 Home Premium 64-bit, Core2 Quad CPU Q9400 @ 2.66GHz (4 CPUs), Kingston DDR2 8500 4GB RAM, ASUS P5Q Pro Turbo motherboard, 500w power supply, Liteon DVD iHAS424, Sapphire HD5770 1GB video.
After installing the various hardware drivers and windows updates DAO was the first program I tried installing. Up to this point I had not noticed anything obviously wrong with the new system.
During the installation of DAO I encountered the "Data Error" problem during the installation. During subsequent attempts to install the game the data error occured at different points of the installation. Anywhere from within 15 seconds to minutes into the installation. I tried most of the possible solutions posted in this thread and a few other similar threads. This included:
- Install shield,
- Copying the DVD to a hard drive,
- Removing specific files from the env, core and texture files,
- Testing the archive integrity with winrar (the list of corrupt files varied each time),
- Different DVD drives, sharing a DVD drive from another PC in my network.
All attempts ended with the "data error" at some point during the installation.
About two-thirds the way through my efforts to install DAO the PC started having some random reboots. WTF? Through the rest of the day the reboots became more frequent and I stopped worrying about DAO and focused on the PC. It turns out the ASUS P5Q motherboard has a dubious record. Particularly with respect to the power connectors on the board, power consumption, audio drivers, and its ability to auto select appropriate settings for RAM.
The secondary power connector (8 pins) comes with four of the pins sealed by a plastic plate. I took this to mean that one of the 4 pin power supply connectors should not be plugged in. Other users have found that the board is unstable unless both of the 4-pin connectors have a power supply. I provided power to all 8 pins of the secondary power connector.
My RAM is supposed to be 1066MHz, which I selected in the BIOS setup. Still got the random reboots. I set the RAM speed to 1002MHz. (I'll be returning the RAM in hopes of getting some that run at the rated speed.) The random reboots went away. I did not try unplugging the 4-pin connector that had been covered before to determine if the random reboots were caused by the power or the memory. But by this time my Windows installation wanted to repair itself and I wanted to get rid of the audio drivers I had installed for the onboard audio. So I put in a fresh installation of Windows 7.
After installing hardware drivers and windows updates I tried installing DOA again. No problems. At this point I might or might not have installed DirectX 11 from the game disk. But I can't remember.
I started the game and used the configuration option. One odd thing I saw here was that the DOA configuration program reports that I only have DirectX 10 installed. I ran dxdiag and it reports that I have DirectX 11 installed.
I started the game, went through the character creation and stopped when I got to a point where I could save the game.
I have gone back and tested core.rar, env.rar and textures.rar files on the DVD. Before my system changes winrar would tell me there were corrupted files in the archives. After the system changes winrar reports that all of the archives are fine.