Antivirus that i recommend are free:

1.- Avast

https://www.avast.com/es-mx/lp-ppc-win-02c?cha=ppc&sen=google&ste=avast&var=65525068992&omcid=ES-MX_Search_Brand&gclid=Cj0KEQjwxpipBRCap8PR2Om7vq4BEiQA6V7OVTgJ8y44__tEHNDDxy36xDDJp3_gQhvnH1_hCe6PUw0aAvcH8P8HAQ

2.- Avira

http://www.avira.com/es/avira-free-antivirus

Windows 8

Windows 8 serial key : English

DNJXJ-7XBW8-2378T-X22TX-BKG7J

2GVN8-TV3C2-K3YM7-MMRVM-BBFDH

967N4-R7KXM-CJKJB-BHGCW-CPKT7

84NRV-6CJR6-DBDXH-FYTBF-4X49V

RRYGR-8JNBY-V2RJ9-TJP4P-749T7

ND8P2-BD2PB-DD8HM-2926R-CRYQH

XWCHQ-CDMYC-9WN2C-BWWTV-YY2KV

Windows 8.1 serial key : ultimate edition

NTTX3-RV7VB-T7X7F-WQYYY-9Y92F

Donwload Windows 8.1

http://windows.microsoft.com/es-mx/windows/downloads

Windows

Serial Key for Windows xp
1: WGP2M-G8M6T-BT7D4-P7RY7-27K76
2: Q6TC4-XKC6F-RCR6X-C6QGQ-XW2GQ
3: M4MCP-86J94-MWRH6-WKXCR-MGMDB
4: JDBW9-R86BW-RRTK6-BBFVM-W8C3D
5:  V2C47-MK7JD-3R89F-D2KXW-VPK3J

Serial Key for Windows 7

1: 9JBBv-7Q7P7-CTDB7-KYBKG-X8HHC
2: 6JKV2-QPB8H-RQ893-FW7TM-PBJ73
3: TQ32R-WFBDM-GFHD2-QGVMH-3P9GC
4: GG4MQ-MGK72-HVXFW-KHCRF-KW6KY
5: 4HJRK-X6Q28-HWRFY-WDYHJ-K8HDH
6: QXV7B-K78W2-QGPR6-9FWH9-KGMM7




Operative System Windows xp service Pack 3














http://adf.ly/bzaVe
PASSWORD: windows xp

Operative System Windows 7

Windows 7 Ultimate SP1-U ISO
Spanish 32bits-x86: http://lnx.lu/0iLk

Spanish 64bits-x64: http://adf.ly/bzdhi

Windows 7 Professional SP1-U ISO

Spanish 32bits-x86: http://adf.ly/SBHJ8
Spanish 64bits-x64: http://adf.ly/SBHQb

Windows 7 Professional N SP1-U ISO 

Spanish 32bits-x86: http://adf.ly/SBHpg
Spanish 64bits-x64: http://adf.ly/SBHuG

Windows 7 Home Premium SP1-U ISO

Spanish 32bits-x86: http://adf.ly/SBI16
Spanish 64bits-x64: http://adf.ly/SBI7p

On this page free programs to use will be displayed.

We are Working in the Web we will add more soon.